Hello,
below is a list of some Issues I've experienced today in the 0.61 experimental.

Zombies (some of it can be seen in this video - https://youtu.be/mmFwhSqzhok)

• They move and react a lot slower then in 0.60, you can outrun them by normal jogging
• They push you around, instead of trying to hit you witch happens less often they collide with your character and push you around, as seen in video provided
• They do not get triggered with ease anymore, sometimes you can stand beside them and they need few seconds to start reacting to you
• They do not hit as precise anymore (You can just stand next to them and they get you in like every 1 out of 5 hits)
• When they die the "hide body" option only appears when standing above them at certain angle and only when aiming at specific part of the bodies and only some times
• When they die they are not shown as"container", neither before or after hiding the body, no loot
• There is a lot of desync between players and zombies, sometimes it happen you're hitting them in the face and it registers all those hits a second or two later, same when they hit you back

Objects/environment (Some of it can be seen in this video - https://www.youtube.com/watch?v=6O9sV4Uaqs4)

• Some buildings have doors that cannot be passed through by walking, the character gets stuck running in place when he reaches them. Running through works.

Lightning/graphics
-When running through some areas, rooms particularly, or just passing through the doors, the lightning sometimes drops in the room for no apparent reason (Some of it can be seen in this video - https://www.youtube.com/watch?v=lbtSZaoJbFA - between 6th and 7th second, the quality is a bit bad, sorry)
-As far as outside areas are concerned, the whole picture periodically flashes brighter (Some of it can be seen in this video - https://www.youtube.com/watch?v=nnrkO0n9_bQ - 6th, then 21st second). It also happens while standing still, every 15 seconds.

• It may have something to do with refresh rate, but it seems to me that during those 15 seconds everything gets gradually darker and then it "resets" itself to it's intended state, the stars in the sky "lag back" a bit to their previous state, brighter and sharper. This however does not happen when it's a full night, only when there is at least a little bit sun left in the sky. During the night only the stars shift back a bit every 15 seconds without brightness change which I guess it's intended for atmosphere.

Miscellaneous

• The mic icon is not shown when talk button is pressed

Hope this will help, sorry about the quality of videos, for some reason they are a lot darker than what I see on screen, I will try to fiddle with settings for next tests or try OBS because ShadowPlay obviously still has some issues.