I am experiencing the same issue. I am a new user of Xmind and I am trying to use it on two iMacs both running High Sierra. One is a year old and the other is brand new and both have the same spec - 3GHz processor and 8GB memory and 2GB video memory. The software is completely unusable and I am spending more time correcting typing mistakes caused by the lag than I am doing what I wanted to do in the first place. I am very much regretting having spent money on the Pro version.
Hi, I got the same issue right now. I updated to 8 Update 5 (R18.104.22.168709290120) but unfortunately it's still very slow and nearly not possible to work with. I hope for a quick update, because I think, it's one of the best mind mapping tools there are.
I'm experiencing the same performance issues with Xmind 8 Pro Update 5 on macOS High Sierra installed on an brand new iMac 5k . It's really slow and after a few minutes the lag on typing makes him unusable.
I understand that OS upgrades sometimes come with compatibility issues but please, I think we deserve at least an answer.
Letting your customers in the dark is not exactly a good move.
My free version of XMind 8 is not merely slow with High Sierra (2015 MacBook Pro; existing maps won't load at all. Very concerned because my maps are one of the cores of my professional work. I've tested all other tools, including video production software which works fine. I've resolved an issue of my camera not transferring images. But this could be a deal breaker. Glad I backed up before upgrading to HS, but I hope this can be repaired quickly.
Here's an update to my posts above. I was preparing to contact XMind Support via email (email@example.com) from their contacts page. One factor they want to know is what version of XMind are you using.
So, I opened XMind (again, I have the trial version), and got the version number -- XMind 8 Update 2, plus some long number. But I decided then to try to create a new map; I haven't done that since upgrading to High Sierra.
I created a simple new map, then saved it, and reopened it. Functioned without a glitch.
So then, on a lark, I decided to try again to open one of my existing maps, created before the HS upgrade.
IT OPENED!!!! Fully functional.
Then I opened my other one, my main one, upon which my professional work for the next few years will manifest, for which I'm creating a new web site.
IT OPENED!!!!!! Again, fully functional, and I can navigate it at normal speed. (It's a HUGE map, so ...)
Color me happy now.
My suggestion: for those of you using High Sierra but experiencing troubles, try creating a new map with just a couple of topics and subtopics, saving, reopen, then try your older maps/files.
I have zero idea if (or why) it will help you, but in the world of computational systems like interacting software, emergent phenomena happen that aren't really explainable in logical terms. Worth a try.