clean installation

Hi. This last days I've been trying xiaomi.eu in my Mi 9t Pro, and I'm struggling a bit with the perfomance of this rom. Everything works fine, no bugs, but my problem it's the perfomance, I find it slow in general, not very responsive and sometimes laggy/ with stuttering in concrete...

I've been reading some stuff here and there but I have to confirm it myself. (My phone is already unlocked of course.) Which are the steps I should take in TWRP? 1. Advanced Wipe> Wipe Dalvik/Cache/System/Data then install the .zip? 2. Should I format data after doing those wipes? 3. Does...