Hi @JamesIG I'm using the new default platform. I was using Firefox yesterday and I'm having the same problems today. I've cleared the cache but it makes no difference the charts are still unusable. FYI I have now downloaded Chromium and am having no problems at all with that browser.
I've not used my account for some time and prior to reactivating it have spent some time today attempting to set up charts for a couple of different currency pairs by adding lines representing levels of support and resistance but found it soooo sloooow as to be virtually impossible. Is this the norm or was there a problem today? This was on the normal charts not MT4 or PRT