Tfkaudio, like some other folks here, I adjust VTA for every record. It makes a significant difference in my system. If a standard weight LP (120-150gr) sounds good on your system, then the VTA is probably set for that thickness LP. If you don't adjust (as you described), you'll likely hear materially rolled off and dull highs and lack of resolution through the midrange on a 200gr LP. Different cartridges are more and less sensitive to VTA changes. On my Walker Proscenium with Magic Diamond cartridge, the differences with even minor VTA adjustments are profound. Clearly, ymmv but it's something to check.
.
.

