I cherry picked commit 3b265c4 from git master and applied it to my copy of the 4.8 branch. It significantly improved the time taken to display one of my investment price history reports. In my opinion this would be a worthwhile change to 4.8 before any 4.8.1 release.
Git commit 63e8dc4b7f1f487861911ab78945f1870d695202 by Ralf Habacker, on behalf of Åukasz WojniÅowicz. Committed on 06/09/2017 at 05:56. Pushed by habacker into branch '4.8'. Speed up KReportChartView::setLineWidth REVIEW: 129830 FIXED-IN:4.8.1 Signed-off-by: Łukasz Wojniłowicz <lukasz.wojnilowicz@gmail.com> (cherry picked from commit 3b265c4b0f451cf9eccc529e3217553196d224db) M +5 -8 kmymoney/reports/kreportchartview.cpp https://commits.kde.org/kmymoney/63e8dc4b7f1f487861911ab78945f1870d695202
Related kf5 commit is https://commits.kde.org/kmymoney/3b265c4b0f451cf9eccc529e3217553196d224db