After joining the world and fly over to other areas or teleport to coordinates minecraft become like this F3+A doesnt fix it still resume as red area or yellow not even green.

How long are you waiting? What is the cpu usage like during this?

Sometimes 1 minute even though when it fix if you press F3+A problem resume not whole chunk but some blocks

cpu usage is 90-100 i have i5 4570

you're not waiting long enough, what are your settings at (lods/cutoff)?
also f3+a does nothing for fp2

is this a CWG world? if not it will take forever on those settings

erm... this really shouldn't be happening unless your computer is completely overloaded. a few questions:

• how much RAM does your computer have, and how much have you allocated to Minecraft?
• how many threads do you have configured in fp2's performance options?

i have 8 gb ram allocated 7gb
Tracking is 1 thread Terrain 3 threa. Render 3 thread

Lods 6 cutoff 380 render distance is 15 how long do i have to wait.
And previous version had missing texture slap issues you guys fix it but some blocks or modded blocks still have that.

I've suspected something like this for a bit too, it takes long before it starts actually updating the location of vanilla terrain after teleportation or really fast moving