adobe premiere preview lag

[#1]

Good afternoon, someone knows because in my adobe premiere preview looks like this? like in fast camera? then when I export it looks good I have 21 ram dedicated to adobe premiere.

[#2]

Good afternoon, someone knows because in my adobe premiere preview looks like this? like in fast camera? then when I export it looks good I have 21 ram dedicated to adobe premiere.

[#3]

[#4]

21 ram dedicated to adobe premiere.

How much does that leave for the system to use?

[#5]

21 ram dedicated to adobe premiere.

How much does that leave for the system to use?

[#6]

[#7]

I would suggest allowing more RAM for the system, maybe 16GB Premiere and 8 GB system, although that is not a solution your main problem.

[#8]

It seems that your videos are recorded with a cell phone in VBR (Variable Bit Rate). Make a test by right-clicking the clip in the Project / Modify / Interpret Footage panel ... In this panel, set the clip to CBR (Constant Bit Rate), for example at 30 fps.