Portal Gun addons dont work on GMod with Volt

[remaster2011]

Portal gun addons like Seamless Portals and Portal Gun Improved do not work. The physics do not allow you to go through the portal usually, with the slight chance that you can enter it though a very laggy and slow way (when entering at high velocity). However, with Seamless Portals, if you go through the portals without anything behind it, the portals work as intended. Please fix this issue.