How fast would MCU Quicksilver be now?

I assume around the same speed.

Same speed. I think he would land few hits on Thanos, then Thanos would react to him and one-shot.

I don't see why he wold be faster.

IMO, Quicksilver would be useful in a fight against Thanos, by doing support stuff, like take the wounded back to safety, connecting the team together and maybe even occupy Thanos, but he can't do anything offensive-wise.

Maybe Hypersonic if they amped him up like with Thor and Scarlet Witch.

Fast Enough to do better than Strange Him dying to Thanos would have boosted him to goat status on Vine .OutRuns AOE via (Power gem) Pushes to his Maximum Speed, Moving in Stopped Time( Time Gem) His Last Stand to Protect Wanda Thanos gotta use The Space Gem Like The Runner He Should be Fast enough to Statue Lightning And Run to-From Wakanda to NYC is within a few Scenes IRT

Anybody that Thinks he should be the Same Speed Prob think EG Wanda would Stalemate AOU Wanda...

Same speed, but it would probably just be portrayed a bit better.