I asked this question a while ago and saw that they don't really accept it, so just to avoid any problems later on, since I would be wrong, regardless of the situation, I chose not to use it. But there are no country-related restrictions in my case, it's just a network issue that blocks access to some sites when I'm away from home, and one option would be a VPN.
Network issues dont results in restrictions, it only limits access due to the inability to load and connect with the site or page.
You might not get restrictions to certain sites but, could be restricted from certain games by the game offerers. For these, many casinos do allow you access by using VPN but, its much safer to not just assume and direct the question to support so you dont run into troubles after a good win.
Sometimes the government blocks gambling sites, even though casinos aren't restricted in your area of residence. Therefore, to access them, we have to circumvent the government restrictions.
However, you're right; network issues, such as slow speeds and so on, are common, and these are caused by internet network disruptions, not restrictions.
Using a VPN for gambling isn't ideal, as some casinos prohibit VPN use. However, others allow VPNs. Therefore, it's important to read all the casino rules to avoid violating them.
