If it ain't broke, don't fix it

Plan to add one more Vertex 4 256GB in R0 just like to try with modded OROM before.
Replaced in Z77MX-D3H F14 bios ROM module 11.1.0.1413 to 11.5.0.1582. As well updated RST drivers in OS.
ASSSD went from 1100+ to 1030-1040.CDM read 500+ to 400+ as well 4K bit. Won't bother to add screens.
Was not so happy about performance drop. As not adding another dive yet though simply roll back changes, no big deal.

Left before OROM/RST, right after flashing back original bios and changing back RST drivers in OS from version v11.6.0.1030 to 11.0.0.1032.



So is there any trick I am missing about rollback? Any difference about specific sequence to install MB INF/RST? Cleaning registry? Something else beside clean install.
Like to get back missing 100MB/s in seq and 20MB/s in 4K writes until need TRIM in R0