I installed the same PNY XLR8 CS3040 1TB. Read speed was the same at slightly above 5600MB/s (didn't write it down). I used a different heatsink (link below).
So far no issues. I transferred about 270GB from a Samsung T7 and everything went smoothly. Took maybe 5-10 min (I wasn't paying attention).
I've only played about 5 or 6 hours of games on the expansion NVME but so far so good.
https://www.amazon.com/dp/B07GNJQ37N?ref=ppx_pop_mob_ap_share