TD-LTE - mobile?
If so, mobile network knows, at least at my country, Tele2 (recently Telemach) was switching IP address and the base so frequently and I got disrupted either throttled when using SSH or FTP - like downloading a file.
As an example, slightly different, I had to use ProtonVPN when downloading a file approx. ~ 50MB or even a larger one (up to 1GB) to keep the connection state and stable speed as it was stated and signed in the aggrement by the ISP.
- was using custom DNS 1.1.1.1 and 1.0.0.1 (without the WARP client app)
Not to mention, TCP and UDP states.
Maybe, somewhat it lost the connection and packets could not be established again even if using custom DNS like 1.1.1.1 and 1.0.0.1 despite the WARP application itself and the selected mode (DoH, DoT, Warp) and protocol (TCP, UDP …).
Regarding reboot of the device, maybe you should only reset (enable/disable) the networking service (or interface) so it could get the new IP back “as is” established via an 4G “antena” via your nearest area?
Due to gaming via with a VPN (even using a WARP client), I believe you have to have the stable connection, regardless the ping and latency.
I could be wrong here, neither correct, but just guessing what could be or possibly go wrong here.
Also, due to our’s ISP peering, it could be that WARP client connection is at first with DNS only (DoH) established at Croatia, therefore if using mode “WARP” goes over Sofia, therafter some time it goes either over Buchurest or Vienna - for example at my location.
Kind of, reminds me when using OutlineVPN (https://getoutline.org/) - which sits on shadowsocks.
As an example, when using Outline, be it on a fibre optic connection (FTTH) or a mobile network (4G+ LTE) connectnion, in both cases I cannot access Cloudflare Community (login) Forum, neither login at Instagram, while I can login Gmail and Facebook, and other.
Also, some dashboard like cPanel is “lagging”, etc. due to the different type of “machine” which is working “under the hood”.
Here are similar topics as you have:
Nevertheless, the Steam:
Technology behind it and the difficulties to cover up (including mobile):
Some discussion:
https://www.reddit.com/r/CloudFlare/comments/dpaagn/cant_use_warp_with_call_of_duty_mobile_and/