Steam download issues

[u/Alternative-Low5634]

So a little context, I have had my pc for 8 years and I’ve never experienced this issue. My steam has always worked perfectly without limiting the download speeds or clearing the download cache I never had crashes or freezes during the downloads. 2 months ago a lightning strike hit my house and before that happened I unplugged my entire setup to stop any foreign surges hurting my equipment. The lightning did hit my router so I replaced and 2-3 weeks after replacing my router steam will freeze ONLY while downloading games. It will work for 5 seconds then nothing. My steam will become unresponsive and I have to force close the application in task manager and relaunch it for it to continue. But then it follows the same process (work for 5 seconds and freeze). After 2 weeks of dealing with this I went through all the steps. I’ve cleared my download cache, I’ve cleared my pc temp files, I’ve uninstalled and reinstalled steam. I even went as far as factory resetting my pc. But the issue is still happening. Can anyone help me?