Sorry if mainly I was not enough clear:
You absolutely
"MUST" not delete anything in your 545GB vars folder if you think, for a lot of always valid motivations, that you can't or if you want not !!!!
JayJayWon has widely argumented discussion pages and a very simple and clear tutorial/read-me in it's plugin page on vam-hub, with everything regularly updated since the year 2022 (in perfect english, step by step).
More in the specific of your question:
to play Vam
without BrowserAssist would mean to loose the ever created real best and easy optional alternative to the original standard vam interface (with a lot of useful very important new functions, so a lot of them that I don't even try to list all of them).
My banal opinion about trying to make vam "faster loading" using it's recent so called "BrowserAssist var management", option that I use mostly and only for fast checking my eventual duplicates, it's simply and nothing more than my banal personal opinion.
Yes, even fun-time is always precious, so I was trying (probably like all more or less advanced vam users) every new methods, every "miracle" script, cpu threads-patches included... without getting any improvement besides wasting time for nothing.
With my modest desktop pc, till today, the best optimal vam performance-solution remains always to keep my operative var list the most garbage-clean and the most "essential" that I can (always considering just and only my banal bastard practical experience).
English is evidently also not my language:
maybe if you can write wich is your (language), then you will get faster more useful answers than mine. F95 is besides discord or vam-hub, a great generous community for any kind of help, assistance by private messaging included.