Ren’Py version 6.99.14 was released on 14 January 2018 with additional performance improvements. On 16 January, A Kiss For The Petals – Remembering How We Met and A Kiss For The Petals – The New Generation! were updated to versions 2.2 and 1.4 respectively. The performance improvements in Ren’Py 6.99.14 come with a caveat—it will now cache compiled Python expressions as they are reached. This may result in slower performance the first time each title is run, but will improve on subsequent runs. More information is available in the Ren’Py changelog for version 6.99.14.
These new versions are available on MangaGamer.com, though you will need to log into your MangaGamer account. Remembering How We Met is also available on Steam.