The nature of a proxy or VPN will always raise your ping. The best one for me and the one I use in KAVA raises my ping by about 10-15% which is not bad, is Ultraurf VPN. It also has an IP changer just for websites too on the Home page.
Try this one and see if it works ok. https://ultrasurf.us/support.html
scroll down the bottom of the page and see the UltraVPN download.