@Hank21 

I really appreciate the help.
I managed to solve it by resetting the board. I forgot to mention it here.

In the meantime I discovered another bug.

  @Hank21

Thanks, my friend.

I don't have the same expertise as the others here, but I can explain this in detail.

I initially had the Omada Controller software on my PC. I wanted to apply DNS Proxy security via DoH. It worked perfectly, but I hadn't done all the tests. I noticed that when the power went out, when it came back on, internet access wouldn't return.

I later discovered that with the Omada Controller, it would need to be connected to the set for internet access to return. I thought this was really bad and was really worried. So, I decided to fix the situation by purchasing the OC200 hardware so I wouldn't have to worry anymore. However, another experience showed me that when the power went out and came back on, I had the problem again. Someone recommended that I also check Google so that I would always have the feature working. Yep! That seemed to have solved the problem.

However, I started to notice that when it switches from one to the other, there is a huge delay to the point of dropping the connection. I'm noticing this all the time.

I don't want to give up this feature. I would really like TP-Link to adjust the feature better, so that I can work with it only with Cloudflare, solving these problems that occur.

I confess that if it were to be like this, and I had to give up DoH, I would continue with the Omada Controller Software.

I hope this report can help.

  @Hank21 

I don't have a video and I don't have any proof, but I'll produce one and post it here.
I know that just from what I posted, it's really hard to have a real idea of ​​what the problem is. But, it was like I mentioned. After activating the feature in OC200, I started noticing these huge bottlenecks, even causing the game to stop for a moment until I left the room or miraculously returned. The latter almost never happens.
I disable the DNS Proxy and everything goes back to normal.

  @Hank21

Oops! I'll close the problems here.

I need to experiment with this situation more.

It's clearly slower, but I really need to do longer tests.

I don't have any more accurate answers about this.

I appreciate your help and would even like some guidance on how I could do these tests.

Thank you.

  @Hank21

Woow!!!
I didn't know about this detail.

So, am I obliged to use DoT???