How to fix horrible ping issues.

Open settings by Pressing Win + i

> Search for "random hardware access" 

Turn it on

Go to network settings

Select your wifi \ ethernet Properties

Set it to private

Turn off metered connection

Set random hardware access in that to change daily .

you can also try this :
open command prompt as administrator and type these commands in order.
1. 

2. 

3. 

4. 

5. 

6. 

> reboot the router
> wait for it to get connected to internet
> then reboot the pc