Slight lag spikes on exported videos?

[SprySilver]

So, I kinda suck at using OBS because I just started using it a while ago, but here's my problem.
Whenever I finish my recording and go back to look at my video, it has slight lag spikes in it. It randomly drops from 60 to 30 fps for like 5 seconds.

Here's an example:

As you can see in the video, at around 00:15 and 00:37 seconds, it kind of lags a little bit. I know it's not much, but these still do kind of annoy me.

These are my OBS settings:

These are my pc specs:

Device name Sheila
Processor AMD Ryzen 7 3700X 8-Core Processor 3.59 GHz
Installed RAM 16.0 GB
Device ID 154AFDC1-C43A-4936-A46D-16C26463ED9E
Product ID 00325-96626-20809-AAOEM
System type 64-bit operating system, x64-based processor
Pen and touch No pen or touch input is available for this display
Graphics Card Radeon RX 580 Series
Storage 2 TB




ALSO: smaller issue, (you dont have to help me solve this unless you want) the file sizes are HUGE for these videos. A 20 second clip is like 800 MB. Is there any way to lower the file size for these videos without degrading the video quality too much?

 

[qhobbes]

Run OBS as Admin. Right click on shortcut, properties, advanced, check box, ok, apply, ok.

Your file sizes are huge because 1. Recording Quality: Indistinguishable Quality, Large File Size and 2. Encoder (x264 low CPU usage preset, increases file size), but mostly 1. Pick a lower Recording Quality.

 

[SprySilver]

Run OBS as Admin. Right click on shortcut, properties, advanced, check box, ok, apply, ok.

Your file sizes are huge because 1. Recording Quality: Indistinguishable Quality, Large File Size and 2. Encoder (x264 low CPU usage preset, increases file size), but mostly 1. Pick a lower Recording Quality.

So I did what you told me to do, but it still every now and then drops from like 60 frames to 30 for like 3 seconds.

 

[qhobbes]

Change the Common FPS Value to 30.

 

[SprySilver]

Change the Common FPS Value to 30.

Well now the video just runs at 30 fps. I just want it to run at a smooth 60 fps without any lag spikes.