I moved the slightly over 2T+ content to a 2T (slightly under) M2 drive but in order to do it I had to hand select and copy the RTs (about 95%)
It took like a day to do it that way.
I run two version from the Task bar. The full one (slow) and the fast one (95%)
I will try moving the drums to a separate drive from the RT someday to see if I can get a little better solution.

Studio One (latest version), Win 11 23H2 , i9 -10940X 3.3 GHz, 32GB Mem, a 4K 40" monitor, PreSonus Studio Live III Console as interface/controller. secondarily test on Reaper, Cakewalk, and S1 on Surface Pro 3 Win 10 (latest versions).