GHub is a garbage piece of software, The best advice would be just avoid Logitech products since their software handicaps them so much. I usually just run an old version of LGS instead of the new GHub and set hardware profiles on my Gpro wireless. Saves me a lot of headache and you can find LGS on their website.
https://support.logi.com/hc/en-us/articles/360025298053-Logitech-Gaming-Software
I would say the speed upgrade first. If you are using the ISP provided router or a modem/router combo I would look into getting your own router eventually. Every single ISP provided router ive ever had has been absolute garbage.
Using a free VPN is worse than not using a VPN at all. Most of the time when a product is "free", you are the product. Companies gotta make money somehow and your data is the best way of making that money.
I mainly play Escape From Tarkov, League of Legends, Rainbow Six Siege, and Destiny 2 and occasionally ill spend a week or so only playing VR games, I am very excited to play Half Life: Alyx here in a few months.
Next thing I would try is check if all the power connectors are in correctly. Mainly the 24pin, CPU, and GPU ones, I've had friends overlook plugging in the CPU power connector so might want to start there.
Is this a new build? If it is, it sounds like the PC just isnt posting to me.
Check and see if there is a reset cmos button somewhere on your motherboard
Here are a bunch of different ways you can reset your cmos, the easiest way ive found to reset cmos is method 2 used in this video. You can just use a screwdriver to bridge the connection.
I’m on a wired connection, I only use Bluetooth every now and then for a controller. I should be fine on the software side since I’m still going to be dual booting win10 primarily for VR and a few Adobe products for school.