Select control crashing when loading in large number of options

Select control crashing when loading in large number of options

I'm building a POC that will need a multi select control. This control gets populated with code and has over 1000 options in it. Please understand, this is just a POC and I totally realize that having this many options is useless for the end user. It's just a POC. If I code the select control without data-native-menu="false" it will render all the items in the select control. I need this data-native-menu="false" attribute because it is required for multiple select functionality. Any idea why the addition of data-native-menu="false" would be crashing the page?