Hey @isaeucastro, thanks for reaching out, welcome to forums and sorry to hear about this, as I do fully appreciate how frustrating such experience can be.
First and foremost, taken into account that this is a technical issue, for troubleshooting purposes, if you haven't already, try completing steps outlined in the following article, and see if it helps.
Should issue persist, may I check the following:
- Are you using Vulkan or DX API?
- Since when did this start to happen?
- Does issue occur in each and every single Ranked Game?
- Did you check with any of your teammates to see if either of them are having this issue too?
- Do you possibly happen to have screenshot showing invisible bans?
Let us know and we will take it from there!