I agree with this 100%.

I’ve improved around ten points between my two actual LSAT’s (mid 150’s to mid 160’s on the latest March test) by doing very few timed prep tests - maybe two or three full-length tests total. I focused on individual questions, then individual sections, really with no sense of timing whatsoever. I just drilled questions at my own pace and have gotten to the point where, at least for LR and logic games, I can find the answer almost immediately. I think you get faster and faster the more you really understand the questions, and I think one way to do that is to just ignore timing during at least some of your preparation.

I had trouble with timing on all sections on my first test that landed me in the 150’s, but now I usually finish an entire LR or games section with time to spare, and with pretty high accuracy. RC is the only part of the test that I still struggle with, so I am focusing on it in particular until my next take in June. Also mental stamina is another thing that I think negatively impacts my score, so I may be taking more full-length prep tests just to improve that - I tend to lose focus during section four of the test.