I don't think there is any "answer" that would be universally applicable, so, any suggestion must come with a caveat that one must accept trial and error as the only means to improving dynamics and the perception of speed.
Speakers tend to sound sluggish if the bass response/balance is off. If the bass is booming and slow to decay, the whole presentation will sound slow. You can only reliably find the right speaker location by experimenting. The further away from the wall behind the speaker and the walls on the side, the less likely that bass would be too prominent and booming, but, at any distance, there are numerous nodes, so correct placement is literally a matter of fractions of an inch. You could just try many different locations, or you could be more systematic by using a particular methodology. For getting the right bass response, Google the "Sumiko" method of speaker placement.
The next most important consideration is room acoustics/treatment. Bass response is NOT very easy to correct without major alterations or really big treatment items, such as bass traps, so this should be considered as secondary to extensive experimentation with correct placement.
The proper use of spikes or other kinds of couplers is also quite important to cleaning up "muddy" sound that makes speakers sound slow and undynamic. But, again, the correct treatment can only be determined by some experimentation. Cones try to couple the speaker firmly to the floor. This can reduce or alter the way the whole speaker is vibrating, and thereby make the sound less muddy and slow, or it can actually exacerbate the problem. Generally speaking, if the speaker can be coupled by the cones to a very solid and hard floor (e.g., flooring on concrete slab), cones can be a help. But, if your flooring is suspended and less solid, cones can transfer energy directly from the speaker to a floor that will act as a sounding board and this will make the sound more muddled, boomy and slow. For what you are trying to do, I generally find cones to be the less effective approach than using some kind of "absorbing" approach. I use Symposium "Svelte Shelves" under my floorstanding speakers. These are placed directly against the bottom of the speaker cabinet (no footers) to get maximum area of contact in order to transfer as much vibrational energy as possible to the shelf; the inner core of the shelf has some kind of rubber that effectively dissipates the vibrational energy as heat. I find that this is the best way to tighten up the sound, and make the bass more punchy (less overhang).
By all means experiment with the back tilt of the speaker. This too affects tonal balance and can help to make the speaker sound more lively and dynamic. You should also experiment with toe-in (how directly the speaker points at the listening spot).
I find that speaker cables can make a substantial difference in tonal balance. A set of cables that is leaner sounding (less bass) will make your speakers sound more dynamic. Some brands, such as Nordost, tend toward such a leaner, faster and more detailed sound.
In all of your experimentation, don't become so focused on this particular goal that you sacrifice everything else. It is WAY too easy to go overboard and end up with a too lean, aggressive and harsh sound.
Speakers tend to sound sluggish if the bass response/balance is off. If the bass is booming and slow to decay, the whole presentation will sound slow. You can only reliably find the right speaker location by experimenting. The further away from the wall behind the speaker and the walls on the side, the less likely that bass would be too prominent and booming, but, at any distance, there are numerous nodes, so correct placement is literally a matter of fractions of an inch. You could just try many different locations, or you could be more systematic by using a particular methodology. For getting the right bass response, Google the "Sumiko" method of speaker placement.
The next most important consideration is room acoustics/treatment. Bass response is NOT very easy to correct without major alterations or really big treatment items, such as bass traps, so this should be considered as secondary to extensive experimentation with correct placement.
The proper use of spikes or other kinds of couplers is also quite important to cleaning up "muddy" sound that makes speakers sound slow and undynamic. But, again, the correct treatment can only be determined by some experimentation. Cones try to couple the speaker firmly to the floor. This can reduce or alter the way the whole speaker is vibrating, and thereby make the sound less muddy and slow, or it can actually exacerbate the problem. Generally speaking, if the speaker can be coupled by the cones to a very solid and hard floor (e.g., flooring on concrete slab), cones can be a help. But, if your flooring is suspended and less solid, cones can transfer energy directly from the speaker to a floor that will act as a sounding board and this will make the sound more muddled, boomy and slow. For what you are trying to do, I generally find cones to be the less effective approach than using some kind of "absorbing" approach. I use Symposium "Svelte Shelves" under my floorstanding speakers. These are placed directly against the bottom of the speaker cabinet (no footers) to get maximum area of contact in order to transfer as much vibrational energy as possible to the shelf; the inner core of the shelf has some kind of rubber that effectively dissipates the vibrational energy as heat. I find that this is the best way to tighten up the sound, and make the bass more punchy (less overhang).
By all means experiment with the back tilt of the speaker. This too affects tonal balance and can help to make the speaker sound more lively and dynamic. You should also experiment with toe-in (how directly the speaker points at the listening spot).
I find that speaker cables can make a substantial difference in tonal balance. A set of cables that is leaner sounding (less bass) will make your speakers sound more dynamic. Some brands, such as Nordost, tend toward such a leaner, faster and more detailed sound.
In all of your experimentation, don't become so focused on this particular goal that you sacrifice everything else. It is WAY too easy to go overboard and end up with a too lean, aggressive and harsh sound.