Yes, typically complex surfaces can cause a lag when importing an ODB++. During ODB++ import, go to tab "Options" and check the option "Convert Surfaces to Polygons (with cutlines)", that will typically alleviate and delays. (see below)
Why? This option simply breaks down complex surfaces into easy to process Polygons - which are common for most EDA formats like Gerber, GDS-II, etc.
Simon Garrison
Yes, typically complex surfaces can cause a lag when importing an ODB++. During ODB++ import, go to tab "Options" and check the option "Convert Surfaces to Polygons (with cutlines)", that will typically alleviate and delays. (see below)
Why? This option simply breaks down complex surfaces into easy to process Polygons - which are common for most EDA formats like Gerber, GDS-II, etc.