Kareem Abdul-Jabbar had the most games in the playoffs with 30+ points and a field-goal percentage of 70.0 or above, with 12 games.

most nba playoff games with 30 points on 70% shooting
Interpreted as:
most NBA playoff games by a player with 30 or more points on 70% or higher shooting
Abdul-JabbarJamesO'NealMcHaleLeonardWorthyDurantHowardBarkleyOlajuwonDavisParkerNowitzkiDuncanEwingJordanBirdDantleyEnglishMaloneGeorgeAntetokounmpoAldridgeButlerPaul12987554444333333333322222
NAMEGPPTSFG%MPGPPGRPGAPGSPGBPGTPGFGMFGA3PM3PA3P%FTMFTAFT%MINREBASTSTLBLKTOVPF+/-
Kareem Abdul-JabbarKareem Abdul-Jabbar1239574.137.232.911.72.51.23.33.313.318.00.00.06.37.880.64461403011302647
LeBron JamesLeBron James933972.637.437.79.16.12.10.73.313.618.73.35.758.87.210.072.233782551963020+161
Shaquille O'NealShaquille O'Neal827874.241.534.813.03.30.52.63.814.419.40.00.06.010.855.8332104264213026+24
Kevin McHaleKevin McHale721975.237.331.38.42.10.01.61.311.715.60.00.10.07.98.691.72615915011923
Kawhi LeonardKawhi Leonard517975.636.535.85.64.02.21.02.413.618.03.05.257.75.65.6100.01822820115125+75
James WorthyJames Worthy516079.142.832.07.61.61.20.82.014.418.20.20.450.03.04.075.0214388641012
Kevin DurantKevin Durant415071.840.537.55.35.51.30.83.312.817.83.34.868.48.89.889.71622122531315+40
Dwight HowardDwight Howard413075.442.232.514.80.81.01.54.011.515.30.00.09.511.880.9169593461618+6
Charles BarkleyCharles Barkley416774.441.041.813.85.02.01.31.815.320.51.01.380.010.312.582.016455208579
Hakeem OlajuwonHakeem Olajuwon412772.439.531.810.33.31.04.52.813.819.00.00.04.35.577.315841134181113
Anthony DavisAnthony Davis311174.138.737.011.32.00.71.01.714.319.31.72.762.56.77.787.01163462357+9
Tony ParkerTony Parker310973.437.436.33.77.30.70.03.015.721.30.71.740.04.35.776.511211222097+37
Dirk NowitzkiDirk Nowitzki312679.642.842.07.72.70.72.01.713.016.31.72.083.314.315.095.61282382657+29
Tim DuncanTim Duncan310373.142.734.313.34.71.31.34.012.717.30.00.09.014.761.41284014441214+27
Patrick EwingPatrick Ewing310873.441.736.09.34.02.72.33.315.721.30.00.04.76.373.71252812871011+3
Michael JordanMichael Jordan311575.440.738.35.36.72.71.33.316.321.70.71.066.75.06.083.31221620841012+11
Larry BirdLarry Bird310672.642.035.312.32.72.31.33.315.020.71.01.0100.04.35.086.7126378741011
Adrian DantleyAdrian Dantley310278.038.734.06.04.30.70.02.713.016.70.00.08.010.080.011618132086
Alex EnglishAlex English310772.940.735.77.04.30.30.04.314.319.70.00.07.07.791.3122211310138
Moses MaloneMoses Malone310074.047.333.314.02.00.01.73.312.316.70.00.08.712.072.2142426051010
Paul GeorgePaul George27772.541.638.511.04.51.50.05.514.520.03.07.042.96.58.081.38322930117+20
Giannis AntetokounmpoGiannis Antetokounmpo26580.636.832.510.07.51.51.02.512.515.51.02.050.06.510.561.97420153255+7
LaMarcus AldridgeLaMarcus Aldridge27975.036.239.57.02.00.02.01.016.522.01.01.0100.05.55.5100.0721440421+26
Jimmy ButlerJimmy Butler27370.342.736.59.07.52.51.54.513.018.52.53.571.48.09.088.98518155392+34
Chris PaulChris Paul26978.833.634.52.58.51.00.02.013.016.54.04.588.94.54.5100.0675172045+27
StatMuse has game-level data for field-goal percentage going back to the 1963 playoffs.